Gann Valley, South Dakota | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Partly Cloudy
    56°
    Sunday 5/19
    Forecast night icon
    56°
    Partly Cloudy
    Hourly
    Night Details
    Partly cloudy. Northwest winds 5 to 10 mph with gusts to around 25 mph.
  • Forecast day icon
    Monday
    40% Chance of Storms
    64°
    Forecast night icon
    Night
    Chance of Storms
    51°
    Monday 5/20
    Day
    64°
    40% Chance of Storms
    Forecast day icon
    Night
    51°
    Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy. A chance of showers in the morning then a chance of showers and a slight chance of thunderstorms in the afternoon. Highs in the upper 60s. North winds 10 to 20 mph. Chance of precipitation 40 percent.
    Night Details
    Mostly cloudy. A chance of showers and a slight chance of thunderstorms in the evening then showers and a chance of thunderstorms after midnight. Lows around 50. Northeast winds 10 to 15 mph.
  • Forecast day icon
    Tuesday
    Chance of Storms
    57°
    Forecast night icon
    Night
    30% Chance Rain Showers
    45°
    Tuesday 5/21
    Day
    57°
    Chance of Storms
    Forecast day icon
    Night
    45°
    30% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Breezy. Showers and a slight chance of thunderstorms in the morning then showers likely in the afternoon. Highs in the upper 50s. North winds 15 to 25 mph.
    Night Details
    Partly cloudy with a 30 percent chance of showers. Lows in the mid 40s. Northwest winds 10 to 20 mph.
  • Forecast day icon
    Wednesday
    Mostly Cloudy
    65°
    Forecast night icon
    Night
    Mostly Clear
    48°
    Wednesday 5/22
    Day
    65°
    Mostly Cloudy
    Forecast day icon
    Night
    48°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy in the morning then clearing. A 20 percent chance of showers. Highs in the upper 60s. West winds 10 to 15 mph.
    Night Details
    Mostly clear. Lows in the mid 40s.
  • Forecast day icon
    Thursday
    30% Chance of Storms
    72°
    Forecast night icon
    Night
    70% Chance of Storms
    52°
    Thursday 5/23
    Day
    72°
    30% Chance of Storms
    Forecast day icon
    Night
    52°
    70% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a chance of showers and a slight chance of thunderstorms. Highs in the mid 70s. Chance of precipitation 30 percent.
    Night Details
    Showers likely and a chance of thunderstorms. Lows around 50. Chance of precipitation 70 percent.
  • Forecast day icon
    Friday
    50% Chance of Storms
    65°
    Forecast night icon
    Night
    Mostly Clear
    48°
    Friday 5/24
    Day
    65°
    50% Chance of Storms
    Forecast day icon
    Night
    48°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a chance of showers and a slight chance of thunderstorms. Highs in the upper 60s. Chance of precipitation 50 percent.
    Night Details
    Mostly clear with a 20 percent chance of showers. Lows in the mid 40s.
  • Forecast day icon
    Saturday
    Mostly Sunny
    71°
    Forecast night icon
    Night
    Partly Cloudy
    52°
    Saturday 5/25
    Day
    71°
    Mostly Sunny
    Forecast day icon
    Night
    52°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the lower 70s.
    Night Details
    Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the lower 50s.
  • Forecast day icon
    Sunday
    30% Chance of Storms
    71°
    Forecast night icon
    Night
    40% Chance of Rain
    52°
    Sunday 5/26
    Day
    71°
    30% Chance of Storms
    Forecast day icon
    Night
    52°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Partly sunny with a chance of showers and a slight chance of thunderstorms. Highs in the mid 70s. Chance of precipitation 30 percent.
    Night Details
    Partly cloudy with a chance of rain. Chance of precipitation 35%. Low temperature around 52F. Dew point will be around 51F with an average humidity of 78%. Winds will be 1 mph from the NE.
  • Forecast day icon
    Monday
    30% Chance of Rain
    67°
    Forecast night icon
    Night
    Partly Cloudy
    51°
    Monday 5/27
    Day
    67°
    30% Chance of Rain
    Forecast day icon
    Night
    51°
    Partly Cloudy
    Forecast night icon
    Day Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 25%. High temperature around 67F. Dew point will be around 50F with an average humidity of 70%. Winds will be 6 mph from the NW.
    Night Details
    Partly cloudy. Low temperature around 51F. Dew point will be around 49F with an average humidity of 73%. Winds will be 3 mph from the NW.
  • Forecast day icon
    Tuesday
    Mostly Sunny
    68°
    Forecast night icon
    Night
    Mostly Clear
    51°
    Tuesday 5/28
    Day
    68°
    Mostly Sunny
    Forecast day icon
    Night
    51°
    Mostly Clear
    Forecast night icon
    Day Details
    Mostly sunny. High temperature around 68F. Dew point will be around 49F with an average humidity of 65%. Winds will be 8 mph from the NW.
    Night Details
    Mostly clear. Low temperature around 51F. Dew point will be around 49F with an average humidity of 72%. Winds will be 2 mph from the NW.